EP0691778A3 - Système de conférence multi-médias - Google Patents
Système de conférence multi-médias Download PDFInfo
- Publication number
- EP0691778A3 EP0691778A3 EP95304535A EP95304535A EP0691778A3 EP 0691778 A3 EP0691778 A3 EP 0691778A3 EP 95304535 A EP95304535 A EP 95304535A EP 95304535 A EP95304535 A EP 95304535A EP 0691778 A3 EP0691778 A3 EP 0691778A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- network
- multimedia
- endpoint devices
- mms
- video
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 abstract 2
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
- H04N7/152—Multipoint control units therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H04M3/567—Multimedia conference systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US272503 | 1994-07-08 | ||
US08/272,503 US5625407A (en) | 1994-07-08 | 1994-07-08 | Seamless multimedia conferencing system using an enhanced multipoint control unit and enhanced endpoint devices |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0691778A2 EP0691778A2 (fr) | 1996-01-10 |
EP0691778A3 true EP0691778A3 (fr) | 1999-01-07 |
EP0691778B1 EP0691778B1 (fr) | 2004-02-18 |
Family
ID=23040077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95304535A Expired - Lifetime EP0691778B1 (fr) | 1994-07-08 | 1995-06-28 | Système de conférence multi-médias |
Country Status (8)
Country | Link |
---|---|
US (1) | US5625407A (fr) |
EP (1) | EP0691778B1 (fr) |
JP (1) | JP3461976B2 (fr) |
KR (1) | KR100401371B1 (fr) |
AU (1) | AU695412B2 (fr) |
CA (1) | CA2150149C (fr) |
NO (1) | NO952703L (fr) |
TW (1) | TW428411B (fr) |
Families Citing this family (123)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0879391A (ja) * | 1994-09-02 | 1996-03-22 | Fujitsu Ltd | 電子会議システム |
AU4161796A (en) * | 1994-12-16 | 1996-07-03 | At & T Corporation | Network based multimedia messaging method and system |
US5854898A (en) | 1995-02-24 | 1998-12-29 | Apple Computer, Inc. | System for automatically adding additional data stream to existing media connection between two end points upon exchange of notifying and confirmation messages therebetween |
CA2216171A1 (fr) * | 1995-03-24 | 1996-10-03 | Ppt Vision, Inc. | Liaison video serie numerique a grande vitesse |
GB2302742B (en) * | 1995-06-26 | 2000-02-16 | Sony Uk Ltd | Interactive interface system |
JPH0936871A (ja) * | 1995-07-17 | 1997-02-07 | Sony Corp | データ伝送システムおよびデータ伝送方法 |
US5757781A (en) * | 1995-09-14 | 1998-05-26 | Lucent Technologies Inc. | Dynamic insertion and removal of multi-media call-handling resources into/from video calls to provide calling features |
US6108704A (en) * | 1995-09-25 | 2000-08-22 | Netspeak Corporation | Point-to-point internet protocol |
JP3401587B2 (ja) * | 1995-11-15 | 2003-04-28 | 富士通株式会社 | 仮想近接サービス制御システム |
GB9603582D0 (en) | 1996-02-20 | 1996-04-17 | Hewlett Packard Co | Method of accessing service resource items that are for use in a telecommunications system |
JPH09172495A (ja) | 1995-12-19 | 1997-06-30 | Fujitsu Ltd | デジタル統合網における多地点/多チャネル接続装置 |
US6041345A (en) * | 1996-03-08 | 2000-03-21 | Microsoft Corporation | Active stream format for holding multiple media streams |
US5812552A (en) * | 1996-03-19 | 1998-09-22 | At & T Corp | Method and apparatus for dynamically forming multimedia emulated local area networks |
US6069890A (en) | 1996-06-26 | 2000-05-30 | Bell Atlantic Network Services, Inc. | Internet telephone service |
US6154445A (en) * | 1996-04-18 | 2000-11-28 | Bell Atlantic Network Services, Inc. | Telephony communication via varied redundant networks |
US6728784B1 (en) * | 1996-08-21 | 2004-04-27 | Netspeak Corporation | Collaborative multimedia architecture for packet-switched data networks |
US6473404B1 (en) | 1998-11-24 | 2002-10-29 | Connect One, Inc. | Multi-protocol telecommunications routing optimization |
US6016307A (en) | 1996-10-31 | 2000-01-18 | Connect One, Inc. | Multi-protocol telecommunications routing optimization |
US6690654B2 (en) | 1996-11-18 | 2004-02-10 | Mci Communications Corporation | Method and system for multi-media collaboration between remote parties |
US6754181B1 (en) | 1996-11-18 | 2004-06-22 | Mci Communications Corporation | System and method for a directory service supporting a hybrid communication system architecture |
US6335927B1 (en) * | 1996-11-18 | 2002-01-01 | Mci Communications Corporation | System and method for providing requested quality of service in a hybrid network |
US7145898B1 (en) | 1996-11-18 | 2006-12-05 | Mci Communications Corporation | System, method and article of manufacture for selecting a gateway of a hybrid communication system architecture |
US6078582A (en) | 1996-12-18 | 2000-06-20 | Bell Atlantic Network Services, Inc. | Internet long distance telephone service |
US6731625B1 (en) | 1997-02-10 | 2004-05-04 | Mci Communications Corporation | System, method and article of manufacture for a call back architecture in a hybrid network with support for internet telephony |
JP2751923B1 (ja) * | 1997-02-05 | 1998-05-18 | 日本電気株式会社 | 多地点テレビ会議システムおよび多地点テレビ会議装置 |
US6081513A (en) * | 1997-02-10 | 2000-06-27 | At&T Corp. | Providing multimedia conferencing services over a wide area network interconnecting nonguaranteed quality of services LANs |
US6137869A (en) | 1997-09-16 | 2000-10-24 | Bell Atlantic Network Services, Inc. | Network session management |
US6574216B1 (en) | 1997-03-11 | 2003-06-03 | Verizon Services Corp. | Packet data network voice call quality monitoring |
US6292479B1 (en) | 1997-03-19 | 2001-09-18 | Bell Atlantic Network Services, Inc. | Transport of caller identification information through diverse communication networks |
US6870827B1 (en) | 1997-03-19 | 2005-03-22 | Verizon Services Corp. | Voice call alternative routing through PSTN and internet networks |
US6449284B1 (en) * | 1997-03-21 | 2002-09-10 | Avaya Technology Corp. | Methods and means for managing multimedia call flow |
EP0997030B1 (fr) * | 1997-07-15 | 2004-11-24 | BRITISH TELECOMMUNICATIONS public limited company | Gestion d'appels multimedia |
US5943321A (en) * | 1997-08-20 | 1999-08-24 | General Datacomm Inc. | Circuit set-up and caching for multimedia multipoint servers |
US5999966A (en) * | 1997-10-07 | 1999-12-07 | Mcdougall; Floyd | Control network-directed video conferencing switching system and method |
US5996015A (en) * | 1997-10-31 | 1999-11-30 | International Business Machines Corporation | Method of delivering seamless and continuous presentation of multimedia data files to a target device by assembling and concatenating multimedia segments in memory |
US6285661B1 (en) * | 1998-01-28 | 2001-09-04 | Picturetel Corporation | Low delay real time digital video mixing for multipoint video conferencing |
US6262978B1 (en) | 1998-03-20 | 2001-07-17 | At&T Corp. | Call completion of video telephone/teleconference call as packet voice call |
US6438111B1 (en) * | 1998-05-22 | 2002-08-20 | Avaya Technology Corp. | Dynamically scaleable conference system |
US6567981B1 (en) | 1998-08-03 | 2003-05-20 | Elysium Broadband Inc. | Audio/video signal redistribution system |
US6018360A (en) * | 1998-09-09 | 2000-01-25 | Motorola, Inc. | Method of switching a call to a multipoint conference call in a H.323 communication compliant environment |
US8175904B2 (en) * | 1998-10-14 | 2012-05-08 | Templeton Bradley S | Method and apparatus for intermediation of meetings and calls |
JP3777835B2 (ja) * | 1998-11-10 | 2006-05-24 | コニカミノルタビジネステクノロジーズ株式会社 | 画像形成装置 |
KR100565186B1 (ko) * | 1998-12-31 | 2006-06-13 | 엘지전자 주식회사 | 멀티캐스트를 이용한 화상회의 방법_ |
JP3415463B2 (ja) * | 1999-01-19 | 2003-06-09 | 日本電気株式会社 | 会議通信装置 |
US6327567B1 (en) | 1999-02-10 | 2001-12-04 | Telefonaktiebolaget L M Ericsson (Publ) | Method and system for providing spatialized audio in conference calls |
US6937597B1 (en) * | 1999-02-26 | 2005-08-30 | Lucent Technologies Inc. | Signaling method for internet telephony |
US7012922B1 (en) * | 1999-08-17 | 2006-03-14 | Nortel Networks Limited | Packet communications system and method |
US6683943B2 (en) | 2000-01-26 | 2004-01-27 | Richard A. Wuelly | Automated mass audience telecommunications database creation method |
US6704769B1 (en) | 2000-04-24 | 2004-03-09 | Polycom, Inc. | Media role management in a video conferencing network |
US6760749B1 (en) * | 2000-05-10 | 2004-07-06 | Polycom, Inc. | Interactive conference content distribution device and methods of use thereof |
TW527833B (en) * | 2000-05-19 | 2003-04-11 | Sony Corp | Network conferencing system, participation authorization method and presenting method |
US7158534B2 (en) * | 2000-11-30 | 2007-01-02 | Imajet Communications, Inc. | Unified distributed architecture for a multi-point video conference and interactive broadcast systems |
US7221663B2 (en) * | 2001-12-31 | 2007-05-22 | Polycom, Inc. | Method and apparatus for wideband conferencing |
US7864938B2 (en) * | 2000-12-26 | 2011-01-04 | Polycom, Inc. | Speakerphone transmitting URL information to a remote device |
US8977683B2 (en) * | 2000-12-26 | 2015-03-10 | Polycom, Inc. | Speakerphone transmitting password information to a remote device |
US7339605B2 (en) * | 2004-04-16 | 2008-03-04 | Polycom, Inc. | Conference link between a speakerphone and a video conference unit |
US8964604B2 (en) * | 2000-12-26 | 2015-02-24 | Polycom, Inc. | Conference endpoint instructing conference bridge to dial phone number |
US9001702B2 (en) * | 2000-12-26 | 2015-04-07 | Polycom, Inc. | Speakerphone using a secure audio connection to initiate a second secure connection |
US8948059B2 (en) * | 2000-12-26 | 2015-02-03 | Polycom, Inc. | Conference endpoint controlling audio volume of a remote device |
US7058168B1 (en) * | 2000-12-29 | 2006-06-06 | Cisco Technology, Inc. | Method and system for participant control of privacy during multiparty communication sessions |
US7003086B1 (en) | 2001-01-18 | 2006-02-21 | Cisco Technology, Inc. | Apparatus and method for allocating call resources during a conference call |
US20020126201A1 (en) * | 2001-03-08 | 2002-09-12 | Star-Bak Communication Inc. | Systems and methods for connecting video conferencing to a distributed network |
US7054933B2 (en) * | 2001-03-19 | 2006-05-30 | Polycom, Inc. | Self-tuning statistical resource allocation for multipoint network events |
CA2446707C (fr) * | 2001-05-10 | 2013-07-30 | Polycom Israel Ltd. | Unite de commande pour systeme audio/multimedia multipoint |
US8976712B2 (en) * | 2001-05-10 | 2015-03-10 | Polycom, Inc. | Speakerphone and conference bridge which request and perform polling operations |
US8934382B2 (en) * | 2001-05-10 | 2015-01-13 | Polycom, Inc. | Conference endpoint controlling functions of a remote device |
EP1402731B1 (fr) * | 2001-05-17 | 2005-07-27 | Optibase | Dispositif et procede pour videotransmission en formats multimedia enrichis multiples |
US7328240B2 (en) * | 2001-06-28 | 2008-02-05 | Intel Corporation | Distributed multipoint conferencing |
US20040004942A1 (en) * | 2001-09-24 | 2004-01-08 | Teleware, Inc. | Multi-media communication management system having graphical user interface conference session management |
EP1454451A1 (fr) * | 2001-12-15 | 2004-09-08 | Thomson Licensing S.A. | Mecanisme de selection de bande passante de videoconference |
US8023458B2 (en) * | 2001-12-31 | 2011-09-20 | Polycom, Inc. | Method and apparatus for wideband conferencing |
US7978838B2 (en) * | 2001-12-31 | 2011-07-12 | Polycom, Inc. | Conference endpoint instructing conference bridge to mute participants |
US8223942B2 (en) | 2001-12-31 | 2012-07-17 | Polycom, Inc. | Conference endpoint requesting and receiving billing information from a conference bridge |
US8705719B2 (en) | 2001-12-31 | 2014-04-22 | Polycom, Inc. | Speakerphone and conference bridge which receive and provide participant monitoring information |
US20050213726A1 (en) * | 2001-12-31 | 2005-09-29 | Polycom, Inc. | Conference bridge which transfers control information embedded in audio information between endpoints |
US8885523B2 (en) * | 2001-12-31 | 2014-11-11 | Polycom, Inc. | Speakerphone transmitting control information embedded in audio information through a conference bridge |
US8934381B2 (en) * | 2001-12-31 | 2015-01-13 | Polycom, Inc. | Conference endpoint instructing a remote device to establish a new connection |
US8102984B2 (en) * | 2001-12-31 | 2012-01-24 | Polycom Inc. | Speakerphone and conference bridge which receive and provide participant monitoring information |
US7787605B2 (en) * | 2001-12-31 | 2010-08-31 | Polycom, Inc. | Conference bridge which decodes and responds to control information embedded in audio information |
US8947487B2 (en) * | 2001-12-31 | 2015-02-03 | Polycom, Inc. | Method and apparatus for combining speakerphone and video conference unit operations |
US7742588B2 (en) | 2001-12-31 | 2010-06-22 | Polycom, Inc. | Speakerphone establishing and using a second connection of graphics information |
US8144854B2 (en) | 2001-12-31 | 2012-03-27 | Polycom Inc. | Conference bridge which detects control information embedded in audio information to prioritize operations |
KR100865993B1 (ko) * | 2002-05-06 | 2008-10-29 | 주식회사 케이티 | 다자간 회의 시스템의 패킷 전달 방법 |
US7298834B1 (en) * | 2002-11-22 | 2007-11-20 | 3Com Corporation | System and method for large capacity conference calls |
US7184531B2 (en) * | 2003-06-05 | 2007-02-27 | Siemens Communications, Inc. | System and method for authorizing a party to join a conference |
NO318868B1 (no) * | 2003-10-24 | 2005-05-18 | Tandberg Telecom As | Videokonferanse med forbedrede multimediakapabiliteter |
US7461126B2 (en) * | 2003-10-30 | 2008-12-02 | Radvision Ltd. | System and method for distributed multipoint conferencing with automatic endpoint address detection and dynamic endpoint-server allocation |
US7061521B2 (en) * | 2003-12-16 | 2006-06-13 | Vugate Inc. | Video conference system providing private and attorney-client privileged communications |
NO20040978A (no) * | 2004-03-05 | 2005-06-13 | Tandberg Telecom As | Fremgangsmåte for avbruddsfri konferansesamtale |
US7818444B2 (en) | 2004-04-30 | 2010-10-19 | Move Networks, Inc. | Apparatus, system, and method for multi-bitrate content streaming |
CN100466671C (zh) * | 2004-05-14 | 2009-03-04 | 华为技术有限公司 | 语音切换方法及其装置 |
US8072909B2 (en) * | 2004-11-15 | 2011-12-06 | Applied Voice & Speech Technologies, Inc. | Apparatus and method for notification of a party in a telephone conference |
US7639633B2 (en) * | 2004-12-13 | 2009-12-29 | Nortel Networks Limited | Apparatus and method for setting up a conference call |
US9112709B1 (en) * | 2005-02-28 | 2015-08-18 | At&T Intellectual Property Ii, L.P. | Ad hoc social work space |
US8126029B2 (en) * | 2005-06-08 | 2012-02-28 | Polycom, Inc. | Voice interference correction for mixed voice and spread spectrum data signaling |
US8045998B2 (en) * | 2005-06-08 | 2011-10-25 | Cisco Technology, Inc. | Method and system for communicating using position information |
US8199791B2 (en) | 2005-06-08 | 2012-06-12 | Polycom, Inc. | Mixed voice and spread spectrum data signaling with enhanced concealment of data |
US7796565B2 (en) | 2005-06-08 | 2010-09-14 | Polycom, Inc. | Mixed voice and spread spectrum data signaling with multiplexing multiple users with CDMA |
US7633914B2 (en) * | 2005-08-10 | 2009-12-15 | Cisco Technology, Inc. | Method and system for providing interoperable communications with location information |
US7636339B2 (en) * | 2005-08-10 | 2009-12-22 | Cisco Technology, Inc. | Method and system for automatic configuration of virtual talk groups based on location of media sources |
US7706339B2 (en) * | 2005-08-10 | 2010-04-27 | Cisco Technology, Inc. | Method and system for communicating media based on location of media source |
US7869386B2 (en) * | 2005-08-29 | 2011-01-11 | Cisco Technology, Inc. | Method and system for conveying media source location information |
US20070099683A1 (en) * | 2005-10-29 | 2007-05-03 | Similarity, Inc., A Delaware Corporation | Interactive pictures |
US8085671B2 (en) * | 2006-02-27 | 2011-12-27 | Cisco Technology, Inc. | Method and system for providing interoperable communications with congestion management |
US7716284B2 (en) * | 2006-02-28 | 2010-05-11 | Microsoft Corporation | Subsystem-scoping architecture for breakout rooms in a virtual space |
US8260338B2 (en) * | 2006-02-28 | 2012-09-04 | Cisco Technology, Inc. | Method and system for providing interoperable communications with dynamic event area allocation |
US9112746B2 (en) * | 2006-04-05 | 2015-08-18 | Cisco Technology, Inc. | Method and system for managing virtual talk groups |
US7860070B2 (en) * | 2006-05-10 | 2010-12-28 | Cisco Technology, Inc. | Providing multiple virtual talk group communication sessions |
US7831270B2 (en) * | 2006-05-18 | 2010-11-09 | Cisco Technology, Inc. | Providing virtual talk group communication sessions in accordance with endpoint resources |
US7639634B2 (en) * | 2006-06-02 | 2009-12-29 | Cisco Technology, Inc. | Method and System for Joining a virtual talk group |
US8266535B2 (en) | 2006-09-11 | 2012-09-11 | Broadnet Teleservices, Llc | Teleforum apparatus and method |
US8570909B1 (en) | 2006-10-17 | 2013-10-29 | Cisco Technology, Inc. | Method and system for providing an indication of a communication |
US7760865B2 (en) * | 2006-11-17 | 2010-07-20 | Microsoft Corporation | Escalation from a conversation to a conference |
EP1936547A1 (fr) * | 2006-12-01 | 2008-06-25 | Iptrade | Appareil et procédé de conférences asymétriques entre des émetteurs-récepteurs locaux et externes |
US8189460B2 (en) * | 2006-12-28 | 2012-05-29 | Cisco Technology, Inc. | Method and system for providing congestion management within a virtual talk group |
US8654954B2 (en) * | 2007-01-03 | 2014-02-18 | Alcatel Lucent | System and method for controlling access to conference calls |
US8874159B2 (en) * | 2007-05-10 | 2014-10-28 | Cisco Technology, Inc. | Method and system for handling dynamic incidents |
US8041378B2 (en) | 2008-12-19 | 2011-10-18 | Cisco Technology, Inc. | System and method for providing channel configurations in a communications environment |
US20100161727A1 (en) * | 2008-12-19 | 2010-06-24 | Cisco Technology, Inc. | System and Method for Accelerating a Wide Area Notification |
US8126494B2 (en) * | 2008-12-19 | 2012-02-28 | Cisco Technology, Inc. | System and method for providing a trunked radio and gateway |
US8238538B2 (en) | 2009-05-28 | 2012-08-07 | Comcast Cable Communications, Llc | Stateful home phone service |
US8495142B2 (en) * | 2010-03-11 | 2013-07-23 | Cisco Technology, Inc. | System and method for providing data channel management in a network environment |
US9392121B2 (en) * | 2010-09-20 | 2016-07-12 | International Business Machines Corporation | Seamlessly conferencing a previously-connected telephone call |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3912874A (en) * | 1974-06-04 | 1975-10-14 | American Telephone & Telegraph | Conference arrangement |
US4540850A (en) * | 1983-04-29 | 1985-09-10 | At&T Bell Laboratories | Method and apparatus for controlling a conference |
US4645872A (en) * | 1982-04-01 | 1987-02-24 | John Hopkins University | Videophone network system |
US4710917A (en) * | 1985-04-08 | 1987-12-01 | Datapoint Corporation | Video conferencing network |
EP0400668A2 (fr) * | 1989-06-02 | 1990-12-05 | Fujitsu Limited | Système de conférence multi-postes |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US4847829A (en) * | 1985-04-08 | 1989-07-11 | Datapoint Corporation | Video conferencing network |
US4686698A (en) * | 1985-04-08 | 1987-08-11 | Datapoint Corporation | Workstation for interfacing with a video conferencing network |
US4653090A (en) * | 1985-12-16 | 1987-03-24 | American Telephone & Telegraph (At&T) | Graphics based call management |
US4953159A (en) * | 1989-01-03 | 1990-08-28 | American Telephone And Telegraph Company | Audiographics conferencing arrangement |
US5014267A (en) * | 1989-04-06 | 1991-05-07 | Datapoint Corporation | Video conferencing network |
US5065392A (en) * | 1990-04-10 | 1991-11-12 | Dsc Communications Corporation | Network controller scheduling system and method of operation |
US5195086A (en) * | 1990-04-12 | 1993-03-16 | At&T Bell Laboratories | Multiple call control method in a multimedia conferencing system |
US5136581A (en) * | 1990-07-02 | 1992-08-04 | At&T Bell Laboratories | Arrangement for reserving and allocating a plurality of competing demands for an ordered bus communication network |
US5323445A (en) * | 1991-03-07 | 1994-06-21 | Mitsubishi Denki Kabushiki Kaisha | Multi-location television conference system |
JP3308563B2 (ja) * | 1991-07-15 | 2002-07-29 | 株式会社日立製作所 | 多地点テレビ会議システム |
US5384771A (en) * | 1993-08-27 | 1995-01-24 | At&T Corp. | Multimedia call configuration system |
-
1994
- 1994-07-08 US US08/272,503 patent/US5625407A/en not_active Expired - Lifetime
-
1995
- 1995-05-25 CA CA002150149A patent/CA2150149C/fr not_active Expired - Fee Related
- 1995-06-17 TW TW084106244A patent/TW428411B/zh not_active IP Right Cessation
- 1995-06-28 EP EP95304535A patent/EP0691778B1/fr not_active Expired - Lifetime
- 1995-07-04 AU AU24811/95A patent/AU695412B2/en not_active Ceased
- 1995-07-07 KR KR1019950019917A patent/KR100401371B1/ko not_active IP Right Cessation
- 1995-07-07 NO NO952703A patent/NO952703L/no not_active Application Discontinuation
- 1995-07-07 JP JP17125795A patent/JP3461976B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3912874A (en) * | 1974-06-04 | 1975-10-14 | American Telephone & Telegraph | Conference arrangement |
US4645872A (en) * | 1982-04-01 | 1987-02-24 | John Hopkins University | Videophone network system |
US4540850A (en) * | 1983-04-29 | 1985-09-10 | At&T Bell Laboratories | Method and apparatus for controlling a conference |
US4710917A (en) * | 1985-04-08 | 1987-12-01 | Datapoint Corporation | Video conferencing network |
EP0400668A2 (fr) * | 1989-06-02 | 1990-12-05 | Fujitsu Limited | Système de conférence multi-postes |
Also Published As
Publication number | Publication date |
---|---|
EP0691778B1 (fr) | 2004-02-18 |
NO952703L (no) | 1996-01-09 |
CA2150149A1 (fr) | 1996-01-09 |
NO952703D0 (no) | 1995-07-07 |
AU695412B2 (en) | 1998-08-13 |
TW428411B (en) | 2001-04-01 |
JPH0870322A (ja) | 1996-03-12 |
KR100401371B1 (ko) | 2003-12-18 |
EP0691778A2 (fr) | 1996-01-10 |
AU2481195A (en) | 1996-01-18 |
US5625407A (en) | 1997-04-29 |
JP3461976B2 (ja) | 2003-10-27 |
CA2150149C (fr) | 2000-02-15 |
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